Lock



G. MAIEIIQLE May 21-, 1935.

LOCK

v Filed Dec. 22, 1935 I N V EN TOR. G'eo rye Maia rZe.

ATTORNEY.

Patented May 21, 1935 y-L NIT T PATENT OFFICE 2,001,824 1 1:1: j p V LOCK Q I George. Maierle, Detroit, Mich.

Application December 22, 1933, Serial No. 703,588

This inventionrelates to looks and the object of the invention is to provide a-lock particularly adapted for useon the gasoline tank of an automobile to prevent-theft of the gasoline therefrom, 15 1' i .One of the particular objects of the invention is to provide an electrically controlled lock in which it is necessary to close an electric circuit ,at the time that the cap is lifted in order that ;the cap and lock may be removed from the gasoline tank. Another objectof the inventionis to provide a lock. of the character described which will prevent removal of the cap from the gasoline tank and. which upon being unlocked will allow removal of the cap and locking member, the lock resetting itself automatically upon removal from the gasoline tank. l

A iurther. object of the invention is to provide a.;lock. member normally preventing retraction of the lock bolts, the said member being retractable from position to allow retraction of the lock bolts whereupon the lock and cap may be removed from the gasolinetank. i

Another object of the invention is toprovide electromagnet which may be energized to :hold -the lock member whereupon the cap may beliftedto retract the lockmember and allow retraction of the lock bolts by means of springs provided for the purpose. go A further object of the invention is. to provide a ,lock which may be applied to any container to preventtheft of the contents thereof, These objects and the several novel features of theinvention are hereinafter more fully de- 35 scribed and claimed and the preferred form of .;.0n$t1 11ction bywhich these objects are attained is shown 1nthe accompanying drawing in -Wh h-. a

Fig. 1 is a section through the lock as applied toacontainer.

Fig. 2 is a section taken on line 2-2of Fig 1. Fig. 3 is a section taken on line 3-3 of Fig. l. Fig. 4 is a perspective view of the lock block. a Fig. 5 is a perspective view of one of the lock sleeves. v

Fig. 6 is a perspective view of one of the pressure applyingmembers. V

Fig. 7 isa perspective'view of one of the lock bolt 'retainers; U f 1" Fig.8 is a perspective view of one of the lock pin h'olders. I The device comprises a tubular member shown in Figs.- 1 and 2, which is welded or other- "avisesecured in a gasoline tank or other container to push the lock bolt outwardly 2 as shown. The tubular member I is provided.

6 Claims. (01. 70-50) with diametrically opposite ways 3, as shown in Figs. 1 and 2, and near the. lower end of each way is an aperture 4 as shown. The gasoline tank cap is provided with a gasket 6, as shown in Fig. 1, and a housing I is secured to the cap 5 5 by the screws 8. .Within the housing 1' is an electro-magnet comprising a coil 9 and a core or pole piece It). The leads to the coil 9 are carried through a flexible conduit I to the source of current supply which, in the case of an auto- 10 mobile, would be the automobile starting and lighting battery. A switch, not here shown, is also preferably incorporated in this circuit and arranged as a switch button mounted on the dash of the automobile. V

As shown in Fig. 3 the housing is provided witn lugs |2 at the lower end and a U-shaped guide frame I3 is secured to the lugs I2 by the screws l4. A look block I5 is slidably mounted in the guide frame |3 and is normally pressed up- 2 wardly by the coiled spring I6. This coiled spring normally supports the lock block in position so that the lock member I! normally engages the pole piece In of the electro-magnet. This lock member H, as shown in Fig. 3, is provided with a square lower end I8 which fits in the aperture IS in the lock block |5 and extends into the central bore 20 in the said block. A sleeve 2| is provided oneach side of the block Hi and is made a pressfit in the central bore 2|] thereof, as shown in Fig. 2. This sleeve may be made in two pieces as shown or may be made in one piece which will extend from opposite sides of the block l5. Each sleeve is provided with a pair of pin slots 22 and with a pair of slots 23, as shown in Fig. 5. Mounted in each lock sleeve 2| is a lock boltretainer 24 having a pin aperture 25 and'a lock bolt 26 is mounted in each retainer 24 and is provided with a pin slot 21, as

shown in Figs. 2 and '1. A coiled spring 28 is also 0 positioned in the lock. bolt retainer 24. and tends Slidably mounted on each lock bolt retainer 24. is a pressure applying member comprising a collar 29 fitting about the member 24 and having two arms 3|] which extend through the slots 23 in the lock sleeve 2| shown in Figs. 2 and 6. A coiled spring 3| is positioned between the collar 29 and the head 32 of the lock bolt retainer and the springs 3| tend to move the lock bolt retainers toward the center of the lock block IS. The head 32 of the lock bolt retainer is slidably mounted in the respective locksleeve 2| and a guide ring 33 is mounted in the forward end of each sleeve 2| 456 and forms a guide or support for the outer end of the respective lock bolt retainer 24.

A look pin 34 is carried by the lock pin holder 35 and this holder extends about the lock sleeve 2i and is provided with extensions at the sides to fit over the arms 30 of the pressure applying member. This lock pin 34 extends through the slots 22 in the lock sleeve 2| and through the apertures 25 in the lock bolt retainer 24 and through the slot- 21 in the lock bolt 26. A'coiled spring 36 is positioned between the arms 30 of the pressure applying members and the respective faces of the lock block l5, as shown in Fig.2.

With the parts in the locked position, shown in Figs. 1, 2 and 3, the arms 30 of the pressure applying members are engaged in-the way 3 in.

the tubular member I and apply a pressure to the springs 36. At the same time, a pressure is also applied to the springs 3| tending to move the lock bolt retainers inwardly but the heads 32" of the lock'boltretainers engage the opposite fiat faces of the square end E8 of thelock member II which, in the locked position, extends between the heads'32 of the lock bolt retainers. Also in this-position the lock bolts 23 engage in the apertures 4 to lock the device in position.

In operation it is necessary to do two things to release the lock. The first is to close the circuit to the electromagnet coil 9 which causes the lock member I .1 to adhere firmly to the pole piece It) and the second is to grasp the cap 5 and lift it while the circuit is closed. As the cap 5 is lifted, the electro-magnet and its housing 7 are lifted therewith thus lifting the U frame l3 and compressing the spring l6. As the electro-magnet is moved upwardly, the lock member I! is carried upwardly therewith until the square end I8 is drawn out of the aperture 20, at which time, the springs 3| move the lock bolt retainers to the center as indicated in dotted lines in Fig. 2.

This retracts the lock bolts 26 from the apertures'4 and the lock bolts are held in the re- 'tracted position by the lock pins 34 which are carried inwardly with the lock bolt retainers-24.

As the cap is lifted, the entire device may be removed from the tubular member I and the circuit to the 'electro-magnet may be broken as soon as the member I! is lifted to: position to release the lock bolt retainers. As the device is lifted out of the tubularmember I, the springs 35 move the'pressure applying members 29 and arms 30 "outwardly and the collar 29 at this time engages the lock pin 34 and moves it back to the position shown in Fig. 2. This carries the lock bolt retainers 24 outwardly and back to the position "shown .in Fig. 2, atwhich time, the spring IE will draw the frame [3 and coil 9 downwardly thusmoving thelock member l1 backfto the position shown in Figs; 2 and 3, at which time, the end of the portion i8 extends between the lock bolt retainer heads 32. The device is then ready for replacement and by inserting it in the tubu- 'lar. member I the arms 30 which are provided with sloping lower faces, as shown in Fig. 6, are fed into the ways 3 thus moving the arms 30' toward the center of the device and placing a pres- .sure' on the springs 31 and 35 and at the same time the lock bolts 26 riding in the ways 3 place the springs 28 under pressure. As the device is moved'to its lower position in the tubular memher, I; the springs 28 throw the lock bolts '26 outwardly into the 'aperturesa at which time, the device is again locked in the tubular member I. From the'foregoing description it becomes evito the electromagnet-, 2,

cap, a guide frame secured to the electro-magnet,

a lock block slidably mounted in the guide frame,

a pair of sleeves carried by the lock block, a pair of guide members slidably mounted in the sleeves and riding in the guide grooves of the stationary sleeve, a tube slidably mounted in each sleeve, :1. pair of spring pressed lock pins within the tubes, the stationary sleeve being provided with apertures to receive the lockpina'a' lock memberextending between the ends of the lock pins and normally preventing retraction of the lock pins, the lock member being retractable by energize.- tion of the electro-magnetto allow withdrawal of the lock pins from the stationary sleeve apertures.

2. In a look, a stationary sleeve provided with guide grooves, a cap arranged to fit over the stationary sleeve, an electro-magnet carried by the cap, a guide frame secured to the electromagnet, a lock block slidably mounted in the guide frame, a pair of sleeves carried by thelock block, a pair of guide members slidably mounted in the sleeves and riding in the guide grooves of the stationary sleeve, a tube slidably mounted in each sleeve, 3. pair of spring pressed lock pins within the tubes, the stationary sleeve being provided with apertures to receive the lock pins, means normally preventing retraction of the lock pins and the electro-magnet being arranged to retract said means upon energization to allow sleeve apertures.

3. In a lock, a stationary sleeve, a cap-arranged to engage one-end of the stationary sleeve, an electro-magnet secured to the cap, a guide frame secured to the electro-magnet, a lock block slidably mounted in the guide frame, a'pair of lock pins carried by the lock block, the sleeve being provided with apertures to receive the lock pins, a lock member normally extending between the ends of the lock pins and preventing retraction of the lock pins, the lockmemb'er-being retractable by energization of the electro-magnet.

i. In a lock, a stationary sleeve, a cap arranged to engage over the stationary sleeve, an electromagnet carried by the cap, a guide frame'sec'ured lock block slidably mounted in the guide frame, a pair of lock pins 'carried'by the lock block,thejstationarysleeve being pr'ovided'with aperturesto receive the lock pins, means normally preventing retraction. of

.to fit over the stationary sleeve, an electro-magnet carried by the cap, a guide frame secured to the electro-magnet, a lock block slidably mounted in the guide frame, a pair of sleeves carried by thelock block, a lock pin slidably mounted in eachv sleeve, the stationary sleeve bein: provided with apertures to receive the lock pins, means normally preventing retraction of the lock pins and the electro-magnet being arranged to retract said means upon energization.

6. In a, lock, an electro-magnet, a guide frame secured to the electro-magnet, a lock block carried 1n the guide frame, a pair of lock pins carried by the lock block, a. lock member carried by the lock block and extending between the ends of the lock pins to normally prevent retraction of the lock pins, the lock member-being retractable upon energization of the electro-magnet.

GEORGE MAIERLE. 

